Historical information
Directions for the use of Artillery Instruments (DUAI) provided a description of the device, in this case the slide rule, how to deploy it and use it for its various purposes, with operating drills and or associated calculations where appropriate, and how to maintain it.
This booklet was owned by an Armistead.(possibly Rod.)
Significance
This pamphlet is a useful reference source as well as being a significant WW11 publication.
Physical description
A small stapled 50pp booklet giving directions for the use of the slide rule in the field.
Inscriptions & markings
right hand corner : handwritten in pen - "Armistead"
